CONCORD — When a 70-foot-tall light post toppled onto a baseball field and smashed a dugout at Willow Pass Park in February, it got the city’s attention.

Now, after using X-rays to find invisible corrosion inside the nearly 50-year-old light poles, the city has ripped out another 13 poles at the park and plans to use about $500,000 from the East Bay Regional Park District’s Measure WW to replace them.

Replacing the lights means the city will no longer have the money to rebuild three crumbling tennis courts at Concord Community Park, which have already been closed for two years. Those courts had been scheduled to be rebuilt using the same Measure WW money. That project is now on hold.

Concord Vice Mayor Ron Leone said the windstorm that blew down the light pole could have been a blessing in disguise.

“I’m not glad that it happened, but I’m glad that we know, because it could have been worse,” Leone said.

The poles will be replaced with new less-electricity-hungry lighting through Concord’s citywide energy-efficiency contract with Chevron.

The new lights will also be brighter, meaning fewer poles will be needed to light the same area, said Acting City Engineer Danea Gemmell. The city removed 10 poles at the park’s tennis courts, she said, which will be replaced by four poles.

The city is also investigating more lights at Willow Pass and Pine Hollow parks to see if they must be replaced, too.

The corrosion is not always visible to the naked eye, Gemmell said.

“It’s actually difficult to see and the only way you can tell is because of the X-ray,” Gemmell said.

The city wants to replace the lights quickly because that field earns money for the city through fees paid by sports teams that use it, Gemmell said.

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